TE Connectivity has brought to market its Raychem matched impedance splices for aerospace applications that to comply with MIL-PRF-32517 standard. According to the company, the splices crack the problem of costly removal and replacement of damaged coaxial cable by enabling fast, easy in situ repairs that preserve characteristic impedance and other electrical properties of the system.

Raychem matched impedance splices Figure 1: TE Connectivity’s Raychem matched impedance splices target military and aerospace applications and are well suited for extreme temperatures, high vibration and corrosive settings.

Coaxial cables are used extensively within aerospace and avionics systems, yet there has been no effective solution to repair such cables damaged during operational use. Until now, any affected cables within the airframe had to be disconnected, removed and then replaced, which was both time-consuming and costly.

The Raychem matched impedance splices are intended for the harsh environments of military and commercial aerospace applications and are well suited for extreme temperatures, high vibration, high EMI and corrosive environments. The splice contains three components: a hexagonal crimp barrel for the centre conductors, a dielectric shell that helps maintain cable geometry for impedance control, and a heat-shrinkable SolderShield splice that both terminates the cable’s shield and provides sealing to protect the splice environmentally.